1.

In polar representation of a complex number (r, π/2) lies on ____________(a) x-axis(b) y-axis(c) z-axis(d) any axisI got this question by my college professor while I was bunking the class.My question is from Argand Plane and Polar Representation topic in section Complex Numbers and Quadratic Equations of Mathematics – Class 11

Answer»

Correct choice is (b) y-AXIS

To explain I would say: To convert POLAR representation (r, θ) into argand plane (X, y), substitute x=r cos θ and y=r sin θ.

x=r cos π/2 = 0 and y=r sin π/2 = r.

Argand plane representation is (0, r). Since real part is zero, so it LIES on IMAGINARY axis i.e. y-axis.



Discussion

No Comment Found

Related InterviewSolutions